- Actor Allusion: Norman Reedus and Clifton Collins Jr. previously appeared together in The Boondock Saints II, and Casey Affleck and Woody Harrelson previously appeared together in Out of the Furnace.
- All-Star Cast: The film has a very impressive cast that includes Kate Winslet, Woody Harrelson, Anthony Mackie, Gal Gadot, Casey Affleck, Chiwetel Ejiofor, Norman Reedus, Teresa Palmer and Aaron Paul.
- Billing Displacement: Norman Reedus gets top billing, even though he's in the film for less than ten minutes.
- Casting Gag: In one scene, a road sign proclaiming "ZOMBIES AHEAD" can be seen, a reference to The Walking Dead, which stars Norman Reedus.
- Fake American: Chiwetel Ejiofor is British and Teresa Palmer is Australian.
- Fake Nationality: Kate Winslet is British playing an Israeli. Her accent is fairly good although it can't help but sound a little weak next to Gal Gadot who actually is from Israel.
- Retroactive Recognition: She wasn't unknown due to having been in the The Fast and the Furious films but Gal Gadot would become far better known shortly after this film when she debuted as Wonder Woman in Batman v Superman: Dawn of Justice before fully launching to stardom a year later in her solo film.
- What Could Have Been:
- Shia LaBeouf was originally cast as Chris Allen, before dropping out. He was replaced by Charlie Hunnam, who was later replaced by Casey Affleck.
- Marcus Belmont (Anthony Mackie's character) was originally going to be played by Michael B. Jordan, who had to drop out due to scheduling conflicts.
- Cate Blanchett was originally cast as Irina before dropping out due to scheduling conflicts.
- Christoph Waltz, Chris Pine, and Jeff Bridges were all attached to the film at various points.
Trivia / Triple 9